STB-1

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General info

The STB-1 in the Garage.

The STB-1 is a Rank V Japanese medium tank with a battle rating of 7.7. It was introduced along with the entire Japanese Ground Forces tree in Update 1.65 "Way of the Samurai". The prototype of the Type 74, the STB-1 presents many features that would be in the final design.

The main purpose, usage and tactics recommendations

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General play style

The STB-1 is the first researchable tank in Japan's Ground Forces Rank V. Despite having considerable more armour than its comparable counterparts the Leopard 1 and Leopard A1A1, as well as comparable mobility, it is not recommended as a front-line tank like the 'Allied' counterparts. Instead, a cautious hit-and-run tactic like the Leopards should always be employed. Using the tank's hydropneumatic suspension correctly can help with the tank's depression, and in some cases, aid in survivability. Do note that the L7 on this tank as well as the Type 74 reload significantly longer than other L7-equipped tanks.

Vehicle characteristics

The STB-1 is unique among being one of the only Japanese tanks that can take a hit, like the Type 4 Chi-To Late and Type 5 Ho-Ri Production. It has thick frontal hull armour that can bounce shots effectively, but should not be relied on. The tank is quite fast and is further aided by the Hydropneumatic suspension, which allows this tank to manoeuvre the battlefield much like a Leopard, however the abundance of larger, more open maps at higher ranks means that getting from point A to B - and not getting shot - is not a simple as it sounds.

Tactics

Specific enemies worth noting

Counter-Tactics

Pros and cons

Pros:

  • Highly mobile, comparable to the German Leopard I].
  • More armour than the German Leopard (around 100m hull and turret).
  • 105 mm L7 cannon found on other NATO tanks.
  • May bounce APHE shells.
  • Low profile.
  • Utilization of hydropneumatic suspension allows for various offensive and defensive options.
  • 12.7mm Browning Machine Gun.

Cons:

  • Other areas are lightly armoured, vulnerable to high penetrating SPAA.
  • Reload and top speed slower than Leopard.
  • Small gun elevation angle.

Specifications

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Armaments

1 × 105 mm L7A3 cannon (50 rounds)
1 × 12.7 mm Browning M2HB heavy machine gun (660 rounds)
1 × 7.62 mm Browning M1919A4 machine gun (4,500 rounds)

Main armament

1 × 105 mm L7A3 cannon
  • Ammunition Capacity: 50 Shells
  • Gun Depression: -6°
  • Gun Elevation: 9°
  • Turret Rotation Speed: 14.3°/s (Stock), 19.8°/s (Upgraded), 24.0°/s (Upgraded + Full Crew), __._°/s (Prior + Expert Qualif.), __._°/s (Prior + Ace Qualif.)
  • Rate of Fire: 10.8s (Stock), 9.6s (Full Crew), _._s (Prior + Expert Qualif.), _._s (Prior + Ace Qualif.)
1 × 105 mm L7A3 cannon
  • Ammunition Capacity: 50 Shells
  • Gun Depression: -6°
  • Gun Elevation: 9°
  • Turret Rotation Speed: 14.3°/s (Stock), 16.8°/s (Upgraded), 20.4°/s (Upgraded + Full Crew), __._°/s (Prior + Expert Qualif.), __._°/s (Prior + Ace Qualif.)
  • Rate of Fire: 10.8s (Stock), 9.6s (Full Crew), _._s (Prior + Expert Qualif.), _._s (Prior + Ace Qualif.)
1 × 105 mm L7A3 cannon
  • Ammunition Capacity: 50 Shells
  • Gun Depression: -6°
  • Gun Elevation: 9°
  • Turret Rotation Speed: 14.3°/s (Stock), 16.8°/s (Upgraded), 20.4°/s (Upgraded + Full Crew), __._°/s (Prior + Expert Qualif.), __._°/s (Prior + Ace Qualif.)
  • Rate of Fire: 10.8s (Stock), 9.6s (Full Crew), _._s (Prior + Expert Qualif.), _._s (Prior + Ace Qualif.)
Ammunition
Ammunition Penetration in mm @ 90° Type of
warhead
Velocity
in m/s
Projectile
Mass in kg
Fuse delay
in m:
Fuse sensitivity
in mm:
Explosive Mass in
TNT equivalent
in g:
Normalization At 30°
from horizontal:
Ricochet:
10m 100m 500m 1000m 1500m 2000m 0% 50% 100%
M392A2 303 302 296 277 257 252 APDS 1478 5.8 N/A N/A N/A +1.5° 15° 12° 10°
M393 127 127 127 127 127 127 HESH 730 15 0.4 0.1 4,310 +0° 15° 12° 10°
M456 400 400 400 400 400 400 HEATFS 1173 11 0.0 0.1 1,270 +0° 25° 18° 15°
Ammo racks
Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
Recommendations Visual
discrepancy
50 45 (+5) 36 (+14) 29 (+11) (+49) Turret empty: 36 (+14) no

Secondary armaments

1 × 12.7 mm Browning M2HB heavy machine gun (pintle-mount)
1 × 7.62 mm Browning M1919A4 machine gun (coaxial)

Crew

  • Commander
  • Gunner
  • Loader
  • Driver

Total: 4 Crew members

Armour

Armour Front Sides Rear Roof
Hull 40-80 mm (64-73°) Front glacis
100 (26°), 80 mm (58-66°)Lower glacis
35-40 mm (44°) Top
40 mm (0-55°) Bottom
25 mm (1-46°) 20 mm
Turret 132 mm (12-66°) Turret front
100-200 mm (1-66°) Gun mantlet
132 mm (1-54°)
75 mm (26-61°) Rear
40 mm (1-64°)
40 mm (36-82°) Turret underside
67 mm Front
20 mm Rear
Armour Sides Roof
Cupola 30 mm 30 mm

Notes:

  • Suspension wheels and tracks are 20 mm thick.
  • Driver's vision port on the front glacis are only 50 mm thick.
  • Hull roof is rated to be 54 mm effective against HE.

Engine & mobility

Weight: 37.8 ton

Max Speed: 59 km/h
Stock

  • Engine Power: 1162 hp @ 2200 rpm
  • Power-to-Weight Ratio: 30.74 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: ___ hp @ 2200 rpm
  • Power-to-Weight Ratio: __.__ hp/ton
  • Maximum Inclination: __°
Weight: 37.8 ton

Max Speed: 53 km/h
Stock

  • Engine Power: 663 hp @ 2200 rpm
  • Power-to-Weight Ratio: 17.54 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: ___ hp @ 2200 rpm
  • Power-to-Weight Ratio: __.__ hp/ton
  • Maximum Inclination: __°
Weight: 37.8 ton

Max Speed: 53 km/h
Stock

  • Engine Power: 663 hp @ 2200 rpm
  • Power-to-Weight Ratio: 17.54 hp/ton
  • Maximum Inclination: 40°

Upgraded

  • Engine Power: ___ hp @ 2200 rpm
  • Power-to-Weight Ratio: __.__ hp/ton
  • Maximum Inclination: __°

Modules and improvements

__MODIFICATIONS__

History of creation and combat usage

The prototype for the Type 74. Known in Japanese as 74式戦車の試作車STB-1 (ななよんしきせんしゃのしさくしゃSTB-1). Created in September 1969 along with STB-2 in the STT program. Due to issues with cost effectiveness these two prototypes were not considered for the replacement of the Type 61. In a bid to reduce costs STB-3, STB-4, STB-5 and STB-6 were produced between April 1970 to December 1971. The final judgement for the STT program was held in November 1973 which lead the line to be completed in 1974. And, production started the following year in 1975 for the Type 74.

Screenshots and fan art

Skins and camouflages for the ____ from live.warthunder.com.

Additional information (links)

[Profile] STB-1: Steel Ninja
Type 74 Wikipedia entry detailing STB (Japanese Only)

References


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jp_st_b1.png

Icon-country-jap.png STB-1
Nation Japan
Type Medium tank
Rank 5
Battle Rating
7.7
7.7
7.7

   Metric✓       Imperial   

   Metric       Imperial✓   

Characteristics
Weight
37,800 kg
83,335 lb
Number of Crew 4
Hull armour thickness
80/40/25/20 mm
3.15/1.57/0.98/0.79 inches
Statistics
Engine power (stock)
1,162 hp
663 hp
663 hp
Engine power (upgraded)
___ hp
750 hp
750 hp
HP/ton ratio (stock)
30.74
31.23
17.54
17.82
17.54
17.82
HP/ton ratio (Upgraded)
__.__
__.__
19.84
20.16
19.84
20.16
Max speed
59 km/h
37 mph
53 km/h
33 mph
53 km/h
33 mph
Main Weapon
1 x 105 mm L7A3 Cannon
Ammo stowage 50 rounds
Vertical guidance -6°/9°
Secondary Weapon
1 x 12.7 mm M2HB Heavy machine gun
Ammo stowage 660 rounds
Mount Pintle mount
Vertical guidance -10°/40°
1 x 7.62 mm M1919A4 Machine gun
Ammo stowage 4,500 rounds
Mount Coaxial
Economy
Required RP 210,000 RP
Vehicle cost 550,000 SL
Crew training cost 160,000 SL
Max repair cost*
2,300 SL
4,800 SL
6,200 SL
Free repair time (Stock)
4d 09h
10d
10d
Free repair time (Upgraded)
_d __h
_d __h
_d __h
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